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counter: add defaults to switch-statements 

Clang static analysis reports this representative problem
counter-chrdev.c:482:3: warning: Undefined or garbage value
  returned to caller
  return ret;
  ^~~~~~~~~~

counter_get_data() has a multilevel switches, some without
defaults, so ret is sometimes not set.
Add returning -EINVAL similar to other defaults.

Link: https://lore.kernel.org/r/20220227161746.82776-1-trix@redhat.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Syed Nayyar Waris <syednwaris@gmail.com>
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/b98d1a3ed4b0b324b261b23defd1bdddddba4d44.1647373009.git.vilhelm.gray@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tom Rix 2022-03-15 15:38:57 -04:00 committed by Greg Kroah-Hartman
parent cac229ed3f
commit 04c633873c
1 changed files with 4 additions and 0 deletions
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4
drivers/counter/counter-chrdev.c
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@ -477,6 +477,8 @@ static int counter_get_data(struct counter_device *const counter,
case COUNTER_SCOPE_COUNT: case COUNTER_SCOPE_COUNT:
ret = comp->count_u8_read(counter, parent, &value_u8); ret = comp->count_u8_read(counter, parent, &value_u8);
break; break;
default:
return -EINVAL;
} }
*value = value_u8; *value = value_u8;
return ret; return ret;
@ -496,6 +498,8 @@ static int counter_get_data(struct counter_device *const counter,
case COUNTER_SCOPE_COUNT: case COUNTER_SCOPE_COUNT:
ret = comp->count_u32_read(counter, parent, &value_u32); ret = comp->count_u32_read(counter, parent, &value_u32);
break; break;
default:
return -EINVAL;
} }
*value = value_u32; *value = value_u32;
return ret; return ret;